diff --git a/requirements.txt b/requirements.txt
index f3580d4f2..d671e8e31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ sphinxcontrib-jquery==4.1
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-mermaid==1.0.0
 sphinx-notfound-page
-sphinxcontrib-phpdomain==0.13.1
+sphinxcontrib-phpdomain==0.13.2
 sphinxcontrib-qthelp==2.0.0
 sphinxcontrib-serializinghtml==2.0.0
 sphinx-toolbox==4.0.0